GLAST Large Area Telescope: Pre-Environmental Test Review Integration and Test Ken Fouts SLAC

1. Gamma-ray Large Area Space Telescope GLAST Large Area Telescope: Pre-Environmental Test Review Integration and Test Ken Fouts SLAC

2. Overview • Review Current Status • LAT Instrument Configuration • Procedure Status • Review Plan for Environmental Test • Organization • Pathfinding Summary • LAT I&T Operations at NRL • EGSE/MGSE Readiness • Test Configurations and flow • Schedule Review

3. Current Configuration • As built configuration • LAT-DS-1624 LAT Top Assembly • Radiators • ACD, Radiator & LAT MLI

4. I&T Process Procedures I&T Standard Processes will continue to be used at NRL

5. Key Documents for Environmental Test Key Environmental Test Planning has been completed

6. Environmental Test Configuration Drawings LAT Instrument Configuration for Environmental Tests is documented

7. Drawings (Mechanical Assembly, Cabling, EGSE/MGSE interface, etc.) I&T Documentation Test Performance and Operation Plan LAT-MD-02730 Test Sequence LAT-MD-00676 LAT Environmental Test Plans QA and Archive I&T Operating Processes and Procedures Assembly Instruction Data Sheet (AIDS) Electronic Logbooks (Component installation, Mate/Demate, Etc.) Non-Conformance Report (NCR) CM processes for document control, release and completion will be maintained.

8. LAT Environmental Test Organization Environmental Test Management Team is in place work planning and scheduling

9. LAT I&T Team LAT I&T Team has a proven track record for safe program execution

10. Pathfinding Summary (1 of 2) LAT Pathfinding Activity Documented in LAT-MD-07727 Objective: Identify and mitigate mechanical operations/handling risk. • Pathfinder Lifting Operations • Installation into and Removal from Shipping Container with the GPR. • Installation into and removal from the Test Stand with GPR • Onto and off of the Vibe Table with the GPR • Test Stand Turnover with Complete Mass Simulator and SLAC lift slings • Installation of the rotated test stand and LAT onto the TVAC table/Trolley • Pathfinder Move Operations • Transport weighted shipping container • Move LAT in the test stand from clean tent to Sine Vibe. • Move LAT and test stand from clean tent to EMI test chamber. • Move LAT and test into Acoustic test chamber. • Move LAT and test stand TVAC staging area and into chamber. LAT-PS-07728 LAT Handling Procedure was developed during Pathfinding

11. Pathfinding Summary (2 of 2) • Pathfinding Miscellaneous Operations/Installations • Radiator installation/removal procedures including timed trial runs (adhesive pot life) • TVAC prep work – mount S/C simulator sink plate • TVAC configure – another rotation and install on Table/Cart • Improved handling procedures for installation and use of test stand extensions • Installation of TVAC STE – heater cages, ACD sink plates • Transport into TVAC chamber and working around LAT and STE inside chamber. • TVAC cable installation and routing Pathfinding activity mitigated potential risk for critical handling operations

12. I&T Operating Plan • The detailed LAT I&T schedule is maintained in MS Project by the I&T Scheduler. • Schedules will be updated daily via the afternoon meeting with progress from that day. • NRL Operations • Normal work time will be 7:00am-8:00pm. “Shifts” will run nominally 7:00am-4:00pm and 12:00am-8:00pm. Shifts will be adjusted to go around the clock as the need arises. • Daily morning meeting at 7:00am and afternoon meeting at 3:00pm. • Daily phone tag-up to SLAC at 4:00pm. • Minimum staff when the instrument is under test is 2 LAT Electrical Test staff members. • TVAC will be staffed 24/7 • Extended shifts and/or Saturdays will be used to maintain schedule as required. • LAT Instrument Handling • LAT will be configured in the portable clean tent whenever possible. • The LAT will be bagged to maintain cleanliness when outside of the controlled environment. • Cleanroom and ESD protocol will be maintained during all LAT handling operations. NRL Operating plan is similar to SLAC Operations

13. Troubleshooting in I&T • No troubleshooting will be done without appropriate disposition on an NCR. • When an anomaly occurs: • The test set-up is frozen • The instrument and test equipment is safed. • The test set-up and instrument configuration is reviewed and documented by the Test Conductor. • Test conductor notifies the TD, Subsystem Engineer and QA. • QA initiates an NCR with information from TC and convenes MRB. • At a minimum, MRB consists of the Test Director, Test Conductor, Subsystem Engineer and QA. • MRB will provide detailed disposition for troubleshooting. • The test procedure will be redlined or a separate procedure will be written (as defined by MRB) to document the troubleshooting activity defined in the disposition. Troubleshooting will be done in accordance with the I&T Implementation Plan

14. Problem Resolution in I&T False Alarm! Issue Closed Problem Observed Inspection, Testing, Data Analysis (HW, SW, Data) Test Conductor Error CorrectiveActions No Flight HW Damaged Non Conformance Report (NCR) Test Procedure/Set Up Error Test Equipment Problem Yes Categorize by Test Conductor and/or Test Director Possible Flight HW Failure HW MRB Troubleshoot HW Root Cause Identified Corrective Actions Possible Flight SW Failure SW JIRA Troubleshoot SW Root Cause Identified Corrective Actions CCB Action Problem Resolution will continue to use the NCR process

15. Network Configuration for LAT Operations at NRL VSC and Power Rack will move with the LAT Instrument

16. LAT I&T CCB Controls Test Configuration Software packages listed below are controlled by CCB in the locations listed • LAT-MD-03492 LAT I&T CM/CCB Procedure establishes the process for configuration control of flight and test software installed on the LAT and EGSE test stations. • LAT I&T CCB is held on an as needed basis and requires the following minimum representation: • I&T Manager (CCB Chair) • I&T Electrical Test Lead • Systems Engineering • Online Manager • Flight Software • Quality Assurance • DAQ Electronics LAT I&T CCB has been successful in controlling software installation/changes

17. Environmental Test MGSE/STE • Transport Container • Manufacture complete; Analyses complete • Proof test complete • Demo Road Test complete • Available at SLAC • Test Interface Plate • Complete • Test Stand/Spreader Bars • Complete, used in pathfinding • TVAC Sink Plates – ACD & S/C Simulator • Complete, used in pathfinding 2 • TVAC Cal-Rod Cage • Complete, used in pathfinding 2 • Acoustic Simulator • Complete • Mass Properties Plate • Load Cell Interface in manufacture – Complete All MGSE has been used in dry run or pathfinding activity

18. GPR, Lift Fixture Proof Test at SLAC Proof Test of the 4x4 Lift Fixture and GPR Rotation Stand w/ GPR Proof Test

19. Facilities • Thermal Vacuum Test • Cables and Port Plates – complete • Mechanical analyses complete • Trolley (cart) – complete, used in pathfinding • Chamber rails upgrade – complete and proof tested • Pathfinding 2 – complete • Chamber refurb, cleaning and recommissioning - complete • GSE bakeout and STE Validation – ECD: 5/16/06 • Acoustic Test • Ramp manufacture complete • Vibration Test • Expander head load frame procurement - delivered • Load frame manufacture – complete • Installation and proof test - complete • EMI/EMC Test • Ramp manufacture – complete, used in pathfinding NRL Facility has been upgraded to meet LAT Operational Requirements

20. L L E EMI/EMC Environmental Test Sequence Baseline Rev date: 24 April 2006 Ship to NRL C F S NRL Post-Ship at SLAC Sine Vibe Acoustic Receive, Mount C T Unpack Radiators L L L L L L Pre Post - Axis Final T - Bal T - Cycle Pre - TV Weight Ship to Remove Pack LAT CG Spectrum Radiators L C F C S S C S L TESTING IN THERMAL VAC CHAMBER F F L L LAT Functional and FSW Test Limited Performance Test Limited Performance Test C C T T TCS Functional Test TCS Functional Test Comprehensive Performance Test Comprehensive Performance Test S S EMI/EMC Emissions/Susceptibility Test EMI/EMC Emissions/Susceptibility Test E E SVAC Test SVAC Test

21. Sine Vibe Configuration

22. Vibration Facility Layou

23. Radiator Installation Radiator flange access Radiator installation test

24. EMI/EMC Test Configuration

25. EMI Chamber Layout

26. Acoustic Test Configuration

27. Acoustic Test Layout

28. TVAC Configuration

29. Thermal STE Heater Cage Configuration S/C Sink Plate Configuration Installation of ACD Sink Plate Panels (5)

30. TVAC Layout

31. Environmental Test Schedule (1 of 3)

32. Environmental Test Schedule (2 of 3)

33. Environmental Test Schedule (3 of 3)

34. Staffing Plan • Current staffing plan for NRL: • Single long shift 5-6 days per week for Sine Vibe, Acoustic, EMI/EMC tests. • 24/7 staffing for TVAC duration. • SLAC will average 14 people including • I&T Management • I&T Electrical • I&T Mechanical • Mechanical Design • Online • SVAC • QA • DAQ

35. Staffing Plan (1 of 2)

36. Staffing Plan (2 of 2)

37. Environmental Test Staffing Summary

38. Summary • The LAT baseline performance has been demonstrated post shipment to NRL. • The LAT instrument as-built configuration is in accordance with current engineering. • Documentation, preparation and pathfinding for handling and configuring the LAT for Environmental Test have been completed. • All EGSE and MGSE has been identified and its use has been demonstrated. • LAT I&T has completed the necessary preparation to begin the LAT Instrument Environmental Test.